Saw-setting machine.



N0. 689,084. Patented DBO. I7, IQEII.

W. L. HLCUMB.

4SAW SETTING MACHINE'.

(Application led Aug'. 7`, 1901.)

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SAW SETTING MACHINE.

(Application filed Aug. 7, 1901.)

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yUNITED Sterns Artnr @muon WILLIAM LEVIS IIOLCOMB, OF GRAND HAVEN,MICHIGAN.

SAW-SETTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 689,084, dated.December 1'7, 1901.

Application filed August '7, 1901. Serial No. '71,177. (No model.)

To @ZZ whom it may concern:

Be it known that l, WILLIAM Lnwts HOL- COMB, a citizen of the UnitedStates,.and a resident of Grand Haven, in the county of Ot- 'tawa andState of Michigan., have invented a new and Improved Saw-SettingMachine, of which the following is a full, clear, and exact description.

inafter described, and defined in the appended claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the iigures.

Figure lis a side view of the improved sawsetting machine. Fig. 2 is aplan view ofthe same. Fig. 3 is an end elevation of the same, and Fig. eis a transverse sectional View substantially on the line 4: t in Fig. 2.

The main frame 5 of the machine comprises an elongated rectangularstructure of suitable height, the legs 5a, that are positioned at eachend of the flat top portion of said frame, being stiffened by thehorizontal frame-beam 5b, affixed by its ends at the in- At the sameside of the main frame 5 with the beam 5b a frame 6, of equal length andheight thereto, is held to roclr toward and from the main frame by apivotal engagement of the lower portions of the legs 6 on the frame 6with the ends of the bracket-arms 6, that are outwardly extended fromthe legs 5a of the main frame 5. Upon the longitudinal top piece of therockable frame G a pressure-bar 7 is removably clamped by theangle-clamps 8, said clamps, in spaced pairs, being oppositely secured`upon the upper and lower sides of the frame-piece 6b, so that dependingmembers ofthe clamps may have hooked engagement with rabbetcd edges ofthe pressure-bar 7.

A similar pressure-bar 7L is removably heid by the clamps Si upon theside edge of the main frame top piece, so as to dispose saidpressure-bar opposite to and suitably spaced from the other pressure-bar7. Upon the adjacent sides of the pressure-bars '7 7a pins h b/ projectin spaced rows, the distance between each pair of contiguous pins oneach pressure-bar being equal to the distance between alternate teeth onthe saw-blade that the machine is to bend or set As shown, the pins ZJon the pressure-bar 7 intervene between the pins b on the bar 7, so thatthe latter-named series of pins may contact with the teeth of the saw toset them toward the rockable frame, while the pins b set the sawteeththey contact with toward the main frame,the saw-blade being supportedbetween the frame, as follows: Two standards 9, of similar form andsize, are erected upon the longitudinally-extended beam 5b and securedthereon at a suitable distance apart, as shown in Fig. l. A verticalslot cis formed in each standard 9, and a headed rest-pin d is slidablyheld in the slot of each standard, these pins aording support for theback edge of a saw-blade A when said blade is in position for thesetting of its teeth, as indicated by dotted lines in Figs. l, 3, ande,the teeth intervening between the presser-pins b b, as before mentioned.A suitable number, preferably three, similar devices for forciblyrocking the upper portion of the frame 6 toward the frame 5 areprovided, consisting of the following details of construction:

The horizontal top portion of the main frame 5 is apertured at threepoints, one aperture being at the longitudinalcenter of the frame andthe others equally removed from said central opening. In each apertureof the main-frame top portion a cam-head 10 is held to rock by twocentral trunnions d', that are journaled in perforations in the frametop piece, as shown clearly in Fig. e. Upon each circular cam-head l0 anannular wedgeshaped projection e is formed, said projection serving as acam to move a pull-bar 1l, as will presently be explained. A curved slotgis formed in the cam-head 10, concentric with its trunnions d', andsaid curved slot defines the outermost edge of the curved cam projectionc. A lever is provided for each cam- IOO head 10 and is held connectedtherewith by the two laterally-projected lugs h, that extend from thelever near its lower end and are affixed upon the cam-head above andbelow the cam projection c. The pull-bar 11 for each cam-head 10 is flatin the body and at one end is bent to hook upon the outer top edge ofthe horizontal head-beam on the rockable frame 6, and the pull-bar is.thereto loosely secured by bolts i, that work in the slots i', formedin the pull-bars. The end of the pullbar 11 which projects toward thecam-head 10.passes loosely through the curved slot g therein and is bentso as to adapt it to hook over the rear side of the cam-head for contactof the wedge-shaped edge of the projection e therewith.

In order to give the cam-heads 10 rocking movement in the samedirection, as indicated by the arrows m2 :r3 in Fig. 1, the lever 12 forthecentral cam-head is afforded greater length than that of theremaining levers 13 14, which are respectively projected from thecam-heads 10 in opposite directions. Upon the lever 12 a link-bar 15 ispivoted by one end, and yat the opposite end of the link- -bar `asimilar connection between it and the free end of the lever 13 isproduced, so that the lever 12 when rocked in the direction of the arrow0: in Fig. 1 will correspondingly actuate the lever 13.

ment with the lever 12, and upon the lower nally'a sufficient degree topress the pins b and h' toward the teeth of a saw A for setting y thesame.

Upon the main-frame top portion 5.and the like portion of the rockableframe 6 two ears m m are erected near each end, one ear, fm,

supporting a-set-screw n, that has engagement with a threadedperforation in the ear, so that the screw may be adjusted toward or fromtheopposed ear, m', and it will be seen that bya longitudinal adjustmentof the setscrews n the degree of rocking movement of the pivoted frame 6toward the stationary frame 5 may be exactly graduated.

In operation, assuming that the saw-.blade A'has been placed in positionbetween the stationary frame 5 and rockable frame G, so that lthepresser-pins h and o are disposed exactly opposite alternate teeth ofthe saw, which are to be bent an equal degree away from thepressure-bars 7 7a by enforced contact of the ypins b b on said teeth,it will be obvious that a sufficient rocking movement ofthe lever 12inthe direction of the arrows:

will'pull upon the bars 11, which will rock An arm 12n projectsdownwardly from the cam-head 10 in alinecados-1 the frame 6 and pins btoward the saw-teeth, that will be set a degree exactly defined byadjustment of the set-screws n, the'pins b simultaneously setting theintervening .sawteeth in an obvious manner.

It will be apparent that the improved machine may be employed forsetting the teeth on any saw which will permit the blade thereof to beintroduced between the stationary frame and rocking frame of themachine; also,'that any available number of the framerocking deviceswhich have been described may be employed and by suitable connections beadapted for operation simultaneously or consecutively, as may bepreferred. Further-more, it is obvious that a plurality ofpressure-bars, such as 7, may he provided and any one of such bars beused, each bar having presser-pins b thereon, which may differ fromthose on another bar in thickness, length, and distance of separation,so that saws having teeth of different shapes and dimensions may beeffectively operated upon-to set the teeth of each saw, it beingunderstood that an appropriate pressure-bar 7a has been placed inposition on the machine.

Having thus described my invention, I claim as newand desire to secureby Letters Patent-- 1. A saw-setting machine, comprising an elongatedmain frame, an auxiliary frame of the same length as the main frame andheld to rock from the main frame, an exchangeable pressure-bar having aseries of spaced presser-pins projected therefrom and securable on theside face of the auxiliary frame,- a like pressure-bar on the side faceof the main frame, means to define the rocking movement of the auxiliaryframe, and means for forcibly rocking the auxiliary frame Vtoward themain frame.

2. A saw-setting machine, comprising an elongated main frame having alevel top piece true on its inner side edge, an auxiliary frame of thesame length as the main kframe and held to rock from the main frame, anexn changeable pressure-bar on' the inner side face of the auxiliaryframe, a similar pressure-bar on the inner side face of the main frame,a series of presser-pins-projected fromeach pressure-bar in alternatingorder, a de-v vice for defining the degree of approach of the pinstoward an intervening saw-blade, and means for forcibly rocking theauxiliary-frame toward the main frame.

3. A saw setting machine, comprising a main frame, an auxiliary frameheld to rock at one side of the main frame, a removable pressure-barsecurable on the upper-side portion of the auxiliary frame, and rockablewith the auxiliary frame toward and from the main frame, pins on thepressure-bar, a similar pressure-bar and pins on the upper sideportionof the main frame, a device adapted to support a saw-bladewithits teeth disposed opposite the two rows of pins, and a pluralityIOC of cams operatively connected with each other, and means connectingeach cam with the auxiliary frame.

4c. A saw setting machine, comprising a main frame, an auxiliary framerockable to- Ward and from the main frame at one side thereof, and meansfor rocking the auxiliary frame, comprising a plurality of cam-headsheld to rock on the level top of the main frame in openings in said top,each cam-head having a Wedge shaped segmental projection thereon and acurved slot therein, a lever on each cam-head, links pivotallyconnecting the levers together to adapt them to-rock together, andpullbars engaged with the auxiliary frame at one end of each bar, and atthe opposite end passing through the curved slot of the cam-block foraloose engagement with the segmental Wedge-shaped projection thereon.

5. A saw-setting machine, comprising a main frame, an auxiliary framepivoted to swing toward and from the main frame, each frame carrying aplurality of pins, the pins of one frame being alternately arranged withrespect to the pins of the other frame, three cam-heads mounted in themain frame, each cam-head having a Wedge-shaped projection and a curvedslot at the outermost edge of the projection, a lever attached to eachcamhead, one lever being longer than the others and extending beyondopposite sides of the cam-head, links connecting the levers,- andpull-rods having guided movement on the frames, each rod having one endengaging the pivoted frame and its other end passing through the slot ofthe cam-head and having its end bent into engagement with theWedgeshaped projection.

6. A saw-setting machine, comprising a main frame provided with slots inits upper face and with projections, an auxiliary frame pivoted to swingtoward and from the main frame and provided with projections oppositethe projections of the main frame, screws in the projections of theauxiliary frame and adapted to engage the projections of the main frame,pressure -bars removably secured to the inner faces of the said framesand each provided with a series of pins, cam-heads mounted in the slotsof the main frame and each provided with a Wedge-shaped projection andacurved slot, a lever secured to each cam-head, links pivotallyconnecting the levers together, and pull-bars having one end engagingthe pivoted frame and their other ends passed through the slots of thecamheads and bent into engagement Withthe Wedge-shaped projections, asset forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing Witnesses.

WILLIAM LEWIS HOLCOMB.

Witnesses:

P. BRUSSE, P. H. MGBRIDE.

